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hardware info.
mainboard:z97 with wifi /bluetooth.
cpu:i7-4790k
dvi connect to monitor(1440*900)
one of hdmi from embedded core of cpu connect to power amplifier ,then to a projector(1080p)
bluetooth connected a speaker
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problem:
when browsing some streaming web site,normally using monitor & bluetooth speaker,it's fine.
but when I switch to use projector ,the steaming begin to jump frame,and sound play won't sync with stream anymore
the problem occurred several times before latest "installation".(from ubuntu,to archlinux,then manjaro&garuda etc...and back to arch again).
each one of them occurred the problem once and I could not find any clue.
because of garuda version build in timeshift ,I rollback a week ,the problem disappear,later "pacman -Syu " again ,the problem didn't emerge.
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But this time switch back to arch 3day's ago,I had not installed every software I needed include timeshift still,the problem occurred allready,
I'v to find the root cause this time.
What I tried:
cpu occupancy rate jump to 100% when switch to play sound through hdmi .and the video & sound began to jump,
But when I disabled the hdmi sound ouput,the steaming won't jump frame anymore;
keep the hdmi video connect to amplifier on,play sound with bluetooth speaker ,the sound is sync with video and they won't jump too.
It might be a driver problem ,but I'v got no clue,It's seems the kernel refuse to use hw sound but use cpu to process sound when switch to hdmi?
Last edited by prosup (2021-08-22 09:20:35)
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